Deleted my 2012 4x4 crew larmie auto a week ago. Went with the mini maxx with h&s overdrive software and 5" diamond eye turbo back exhaust. WOW. Trans software is awesome. Firm shifts that are not too soon like factory shift points. Mileage on my first tank is up almost 3.5 mpg on my daily commute and so far my second tank is getting 1mpg better than the last tank. I'm running the mild tune and have not had a chance to tow yet. it is a totally different truck should have deleted sooner.

Hand calculated or on the overhead lie-o-meter. My chip added 3-4 mpg to the lie-o-meter but 1.5 mpg hand calculated.